During World War II your plane has been shot down over Germany. You've been taken as a POW and locked up in a castle. After three failed escape attempts, maybe fourth time's the charm?
Notes
This was published with Commodore Disk User magazine, issue 6, vol. 1, no. 6, September/October 1988, p. 18 and Your Commodore, issue 79, May 1991, p. 14, cover tape 17, side A.